The Structure of Crystalline Solids
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MSE 403: Ceramic Materials
MSE 403: Ceramic Materials Course description: Processing, characteristics, microstructure and properties of ceramic materials. Number of credits: 3 Course Coordinator: John McCloy Prerequisites by course: MSE 201 Prerequisites by topic: 1. Basic knowledge of thermodynamics. 2. Elementary crystallography and crystal structure. 3. Mechanical behavior of materials. Postrequisites: None Textbooks/other required 1. Carter, C.B. and Norton, M.G. Ceramic Materials Science and Engineering, materials: Springer, 2007. Course objectives: 1. Review of crystallography and crystal structure. 2. Review of structure of atoms, molecules and bonding in ceramics. 3. Discussion on structure of ceramics. 4. Effects of structure on physical properties. 5. Ceramic Phase diagrams. 6. Discussion on defects in ceramics. 7. Introduction to glass. 8. Discussion on processing of ceramics. 9. Introduction to sintering and grain growth. 10. Introduction to mechanical properties of ceramics. 11. Introduction to electrical properties of ceramics. 12. Introduction to bioceramics. 13. Introduction to magnetic ceramics. Topics covered: 1. Introduction to crystal structure and crystallography. 2. Fundamentals of structure of atoms. 3. Structure of ceramics and its influence on properties. 4. Binary and ternary phase diagrams. 5. Point defects in ceramics. 6. Glass and glass-ceramic composites. 7. Ceramics processing and sintering. 8. Mechanical properties of ceramics. 9. Electrical properties of ceramics. 10. Bio-ceramics. 11. Ceramic magnets. Expected student outcomes: 1. Knowledge of crystal structure of ceramics. 2. Knowledge of structure-property relationship in ceramics. 3. Knowledge of the defects in ceramics (Point defects). 4. Knowledge of glass and glass-ceramic composite materials. 5. Introductory knowledge on the processing of bulk ceramics. 6. Applications of ceramic materials in structural, biological and electrical components. -
Materials Science and Engineering 1
Materials Science and Engineering 1 EN.515.603. Materials Characterization. 3 Credits. MATERIALS SCIENCE AND This course will describe a variety of techniques used to characterize the structure and composition of engineering materials, including metals, ENGINEERING ceramics, polymers, composites, and semiconductors. The emphasis will be on microstructural characterization techniques, including optical The Materials Science and Engineering Program for professionals allows and electron microscopy, x-ray diffraction, and acoustic microscopy. students to take courses that address current and emerging areas Surface analytical techniques, including Auger electron spectroscopy, critical to the development and use of biomaterials, electronic materials, secondary ion mass spectroscopy, x-ray photoelectron spectroscopy, structural materials, nanomaterials and nanotechnology, and related and Rutherford backscattering spectroscopy. Real-world examples of materials processing technologies. Students in this program gain an materials characterization will be presented throughout the course, advanced understanding of foundational concepts and are exposed to including characterization of thin films, surfaces, interfaces, and single the latest research that is driving materials-related advances. crystals. Courses are offered at the Applied Physics Laboratory, the Homewood EN.515.605. Electrical, Optical and Magnetic Properties. 3 Credits. campus, and online. An overview of electrical, optical and magnetic properties arising from the fundamental electronic and atomic structure of materials. Continuum materials properties are developed through examination of microscopic Program Committee processes. Emphasis will be placed on both fundamental principles and James Spicer, Program Chair applications in contemporary materials technologies.Course Note(s): Principal Professional Staff Please note that this 515 course is also listed as a 510 course in the full- JHU Applied Physics Laboratory time program. -
Biological Materials: a Materials Science Approach✩
JOURNALOFTHEMECHANICALBEHAVIOROFBIOMEDICALMATERIALS ( ) ± available at www.sciencedirect.com journal homepage: www.elsevier.com/locate/jmbbm Review article Biological materials: A materials science approachI Marc A. Meyers∗, PoYu Chen, Maria I. Lopez, Yasuaki Seki, Albert Y.M. Lin University of California, San Diego, La Jolla, CA, United States ARTICLEINFO ABSTRACT Article history: The approach used by Materials Science and Engineering is revealing new aspects Received 25 May 2010 in the structure and properties of biological materials. The integration of advanced Received in revised form characterization, mechanical testing, and modeling methods can rationalize heretofore 20 August 2010 unexplained aspects of these structures. As an illustration of the power of this Accepted 22 August 2010 methodology, we apply it to biomineralized shells, avian beaks and feathers, and fish scales. We also present a few selected bioinspired applications: Velcro, an Al2O3PMMA composite inspired by the abalone shell, and synthetic attachment devices inspired by gecko. ⃝c 2010 Elsevier Ltd. All rights reserved. Contents 1. Introduction and basic components ............................................................................................................................................. 1 2. Hierarchical nature of biological materials ................................................................................................................................... 3 3. Structural biological materials..................................................................................................................................................... -
Materials Science
Materials Science Materials Science is an interdisciplinary field combining physics (fundamental laws of nature), chemistry (interactions of atoms) and biology (how life interacts with materials) to elucidate the inherent properties of basic and complex systems. This includes optical (interaction with light), electrical (interaction with charge), magnetic and structural properties of everyday electronics, clothing and architecture. The Materials Science central dogma follows the sequence: Structure—Properties—Design—Performance. This involves relating the nanostructure of a material to its macroscale physical and chemical properties. By understanding and then changing the structure, material scientists can create custom materials with unique properties. The goal of the materials science minor is to create a cross-disciplinary approach to fundamental topics in basic and applied physical sciences. Students will gain experience and perspectives from the disciplines of chemistry, physics and biology. The minor places a strong emphasis on current nanoscale research methods in addition to the basics of electronic, optical and mechanical properties of materials. Any student with an interest in pursuing the cross-disciplinary minor in materials science should consult with the coordinator of the minor. Students are encouraged to declare their participation in their sophomore year but no later than the end of the junior year. Students also should seek an adviser from participating faculty. Degree Requirements for the Minor General College requirements -
Thirty-Fourth List of New Mineral Names
MINERALOGICAL MAGAZINE, DECEMBER 1986, VOL. 50, PP. 741-61 Thirty-fourth list of new mineral names E. E. FEJER Department of Mineralogy, British Museum (Natural History), Cromwell Road, London SW7 5BD THE present list contains 181 entries. Of these 148 are Alacranite. V. I. Popova, V. A. Popov, A. Clark, valid species, most of which have been approved by the V. O. Polyakov, and S. E. Borisovskii, 1986. Zap. IMA Commission on New Minerals and Mineral Names, 115, 360. First found at Alacran, Pampa Larga, 17 are misspellings or erroneous transliterations, 9 are Chile by A. H. Clark in 1970 (rejected by IMA names published without IMA approval, 4 are variety because of insufficient data), then in 1980 at the names, 2 are spelling corrections, and one is a name applied to gem material. As in previous lists, contractions caldera of Uzon volcano, Kamchatka, USSR, as are used for the names of frequently cited journals and yellowish orange equant crystals up to 0.5 ram, other publications are abbreviated in italic. sometimes flattened on {100} with {100}, {111}, {ill}, and {110} faces, adamantine to greasy Abhurite. J. J. Matzko, H. T. Evans Jr., M. E. Mrose, lustre, poor {100} cleavage, brittle, H 1 Mono- and P. Aruscavage, 1985. C.M. 23, 233. At a clinic, P2/c, a 9.89(2), b 9.73(2), c 9.13(1) A, depth c.35 m, in an arm of the Red Sea, known as fl 101.84(5) ~ Z = 2; Dobs. 3.43(5), D~alr 3.43; Sharm Abhur, c.30 km north of Jiddah, Saudi reflectances and microhardness given. -
Aperiodic Mineral Structures
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Infoscience - École polytechnique fédérale de Lausanne EMU Notes in Mineralogy, Vol. 19 (2017), Chapter 5, 213–254 Aperiodic mineral structures L. BINDI1 and G. CHAPUIS2 1 Dipartimento di Scienze della Terra, Universita` di Firenze, Via La Pira 4, I-50121 Firenze, Italy 2 Laboratoire de Cristallographie, E´cole Polytechnique Fe´de´rale de Lausanne, CH-1015 Lausanne, Switzerland The three-dimensional periodic nature of crystalline structures was so strongly anchored in the minds of scientists that the numerous indications that seemed to question this model struggled to acquire the status of validity. The discovery of aperiodic crystals, a generic term including modulated, composite and quasicrystal structures, started in the 1970s with the discovery of incommensurately modulated structures and the presence of satellite reflections surrounding the main reflections in the diffraction patterns. The need to use additional integers to index such diffractograms was soon adopted and theoretical considerations showed that any crystal structure requiring more than three integers to index its diffraction pattern could be described as a periodic object in a higher dimensional space, i.e. superspace, with dimension equal to the number of required integers. The structure observed in physical space is thus a three-dimensional intersection of the structure described as periodic in superspace. Once the symmetry properties of aperiodic crystals were established, the superspace theory was soon adopted in order to describe numerous examples of incommensurate crystal structures from natural and synthetic organic and inorganic compounds even to proteins. Aperiodic crystals thus exhibit perfect atomic structures with long-range order, but without any three-dimensional translational symmetry. -
Previously Unknown Quasicrystal Periodic Approximant Found in Space Received: 13 August 2018 Luca Bindi 1, Joyce Pham 2 & Paul J
www.nature.com/scientificreports OPEN Previously unknown quasicrystal periodic approximant found in space Received: 13 August 2018 Luca Bindi 1, Joyce Pham 2 & Paul J. Steinhardt3,4 Accepted: 16 October 2018 We report the discovery of Al Ni Fe , the frst natural known periodic crystalline approximant Published: xx xx xxxx 34 9 2 to decagonite (Al71Ni24Fe5), a natural quasicrystal composed of a periodic stack of planes with quasiperiodic atomic order and ten-fold symmetry. The new mineral has been approved by the International Mineralogical Association (IMA 2018-038) and ofcially named proxidecagonite, which derives from its identity to periodic approximant of decagonite. Both decagonite and proxidecagonite were found in fragments from the Khatyrka meteorite. Proxidecagonite is the frst natural quasicrystal approximant to be found in the Al-Ni-Fe system. Within this system, the decagonal quasicrystal phase has been reported to transform at ~940 °C to Al13(Fe,Ni)4, Al3(Fe,Ni)2 and the liquid phase, and between 800 and 850 °C to Al13(Fe,Ni)4, Al3(Fe,Ni) and Al3(Fe,Ni)2. The fact that proxidecagonite has not been observed in the laboratory before and formed in a meteorite exposed to high pressures and temperatures during impact-induced shocks suggests that it might be a thermodynamically stable compound at high pressure. The most prominent structural motifs are pseudo-pentagonal symmetry subunits, such as pentagonal bipyramids, that share edges and corners with trigonal bipyramids and which maximize shortest Ni–Al over Ni–Ni contacts. 1,2 Te frst decagonal quasicrystalline (QC) phase found in nature, decagonite Al71Ni24Fe5 , was discovered in the Khatyrka meteorite, a CV3 carbonaceous chondrite3–8. -
79Th Annual Meeting of the Meteoritical Society (2016) 6017.Pdf
79th Annual Meeting of the Meteoritical Society (2016) 6017.pdf DISCOVERY OF NEW Al-Cu-Fe MINERALS IN THE KHATYRKA CV3 METEORITE. Chi Ma1,*, Chaney Lin2, Luca Bindi3, Paul J. Steinhardt2. 1Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA; 2Department of Physics, Princeton University, Princeton, NJ 08544, USA; 3Dipartimento di Scienze della Terra, Università di Firenze, Via La Pira 4, I-50121 Florence, Italy; *Email: [email protected]. Introduction: During a nanomineralogy investigation of the Khatyrka CV3 carbonaceous chondrite, we have identified two new alloy minerals (AlCu with a Pm-3m CsCl structure and Al3Fe with a C2/m structure) and associ- ated icosahedrite (quasicrystal Al63Cu26Fe11 with a five-fold symmetry) at micron scales in section 126A of USNM 7908. The section belongs to the larger Grain 126, which is one of the fragments recovered from an expedition to the Koryak Mountains in far eastern Russia in 2011 [1] as a result of a search for samples that would provide infor- mation on the origin of the quasicrystal mineral icosahedrite [2,3,4]. The recovered fragments have meteoritic (CV3- like) oxygen isotopic compositions and are identified collectively as coming from the Khatyrka meteorite [5], which formed 4.5 billion years ago during the earliest stages of the solar system. Khatyrka is unique, so far being the only meteorite to host metallic Al component. Field-emission scanning electron microscope with energy-dispersive X-ray spectrometer and electron back- scatter diffraction (EBSD), and electron probe microanalyzer (EPMA) were used to characterize chemical composi- tions and structures of the minerals in section 126A. -
Glossary of Materials Engineering Terminology
Glossary of Materials Engineering Terminology Adapted from: Callister, W. D.; Rethwisch, D. G. Materials Science and Engineering: An Introduction, 8th ed.; John Wiley & Sons, Inc.: Hoboken, NJ, 2010. McCrum, N. G.; Buckley, C. P.; Bucknall, C. B. Principles of Polymer Engineering, 2nd ed.; Oxford University Press: New York, NY, 1997. Brittle fracture: fracture that occurs by rapid crack formation and propagation through the material, without any appreciable deformation prior to failure. Crazing: a common response of plastics to an applied load, typically involving the formation of an opaque banded region within transparent plastic; at the microscale, the craze region is a collection of nanoscale, stress-induced voids and load-bearing fibrils within the material’s structure; craze regions commonly occur at or near a propagating crack in the material. Ductile fracture: a mode of material failure that is accompanied by extensive permanent deformation of the material. Ductility: a measure of a material’s ability to undergo appreciable permanent deformation before fracture; ductile materials (including many metals and plastics) typically display a greater amount of strain or total elongation before fracture compared to non-ductile materials (such as most ceramics). Elastic modulus: a measure of a material’s stiffness; quantified as a ratio of stress to strain prior to the yield point and reported in units of Pascals (Pa); for a material deformed in tension, this is referred to as a Young’s modulus. Engineering strain: the change in gauge length of a specimen in the direction of the applied load divided by its original gauge length; strain is typically unit-less and frequently reported as a percentage. -
Cosmic History and a Candidate Parent Asteroid for the Quasicrystal-Bearing Meteorite Khatyrka
COSMIC HISTORY AND A CANDIDATE PARENT ASTEROID FOR THE QUASICRYSTAL-BEARING METEORITE KHATYRKA Matthias M. M. Meier1*, Luca Bindi2,3, Philipp R. Heck4, April I. Neander5, Nicole H. Spring6,7, My E. I. Riebe1,8, Colin Maden1, Heinrich Baur1, Paul J. Steinhardt9, Rainer Wieler1 and Henner Busemann1 1Institute of Geochemistry and Petrology, ETH Zurich, Zurich, Switzerland. 2Dipartimento di Scienze della Terra, Università di Firenze, Florence, Italy. 3CNR-Istituto di Geoscienze e Georisorse, Sezione di Firenze, Florence, Italy. 4Robert A. Pritzker Center for Meteoritics and Polar Studies, Field Museum of Natural History, Chicago, USA. 5De- partment of Organismal Biology and Anatomy, University of Chicago, Chicago, USA. 6School of Earth and Environ- mental Sciences, University of Manchester, Manchester, UK. 7Department of Earth and Atmospheric Sciences, Uni- versity of Alberta, Edmonton, Canada. 8Current address: Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, USA. 9Department of Physics, and Princeton Center for Theoretical Science, Princeton University, Princeton, USA. *corresponding author: [email protected]; (office phone: +41 44 632 64 53) Submitted to Earth and Planetary Science Letters. Abstract The unique CV-type meteorite Khatyrka is the only natural sample in which “quasicrystals” and associated crystalline Cu,Al-alloys, including khatyrkite and cupalite, have been found. They are suspected to have formed in the early Solar System. To better understand the origin of these ex- otic phases, and the relationship of Khatyrka to other CV chondrites, we have measured He and Ne in six individual, ~40-μm-sized olivine grains from Khatyrka. We find a cosmic-ray exposure age of about 2-4 Ma (if the meteoroid was <3 m in diameter, more if it was larger). -
EXPERIMENTAL IMPACTS of ALUMINUM PROJECTILES INTO QUARTZ SAND: FORMATION 1,2 1,3 of KHATYRKITE (Cual2) and REDUCTION of QUARTZ to SILICON
Bridging the Gap III (2015) 1071.pdf EXPERIMENTAL IMPACTS OF ALUMINUM PROJECTILES INTO QUARTZ SAND: FORMATION 1,2 1,3 OF KHATYRKITE (CuAl2) AND REDUCTION OF QUARTZ TO SILICON. C. Hamann , D. Stöffler , and W. U. Reimold1,3. 1Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, In- validenstraße 43, 10115 Berlin, Germany ([email protected]; dieter.stö[email protected]; [email protected]); 2Institut für Geologische Wissenschaften, Freie Universität Berlin, Malteserstraße 74– 100, 12249 Berlin, Germany, 3Humboldt-Universität zu Berlin, Unter der Linden 6, 10099 Berlin, Germany. Introduction and Rationale: Impact cratering is a melt particles, shock-lithified sand with and without basic geologic process in the solar system, which was distinct shock effects (PDF, diaplectic glass), and frac- predominant over endogenic geologic processes in the tured quartz grains (for details, see the companion early evolution of geologically active planetary bodies. abstract by Wünnemann et al. [10]). Since this study Since most planetary surfaces are highly porous and/or focuses on chemical projectile–target interaction, we composed of non-cohesive materials (e.g., the lunar will only consider impact melt particles that obviously regolith), understanding the influence of pore space show a crust of projectile melt on their top sides. and non-cohesiveness of materials on the impact pro- The bulk compositions of projectile and target were cess is crucial for gaining insights into the evolution of determined with EMPA and XRF, respectively. Impact planetary regoliths. To this end, numerous theoretical melt particles were studied with optical microscopy, and experimental studies have been conducted (e.g., SEM-EDX, and EMPA. -
Ceramic Materials
Material Science I Ceramic Materials F. Filser & L.J. Gauckler ETH-Zürich, Departement Materials [email protected] HS 2007 Ceramics: Introduction 1 Material Science I Persons in Charge of this Lecture • Dr. F. Filser, HCI G 529, phone 26435, [email protected] • Prof. Dr. L.J. Gauckler HCI G 535, phone 25646, [email protected] • F. Krauss HCI G 538, phone 3 68 34, [email protected] • Dipl.-Ing. J. Kübler EMPA Dübendorf, phone 044 823 4223, [email protected] Ceramics: Introduction 2 Material Science I Overview & preliminary schedule (HS 2007) Nov 26, 07 Introduction on ceramic materials, technology, applications Dec 03, 07 Crystal structures of ceramic materials Dec 10, 07 Potential well of bonding and physical properties & Examples of Structural ceramic materials Dec 17, 07 Examples of structural ceramic materials Dec 21, 07 term finish Ceramics: Introduction 3 Material Science I Overview & preliminary schedule (FS 2008) Feb 18, 08 term starts (5 x ceramic & 9 x polymer) Feb 19, 08 Glass Feb 26, 08 Toughness (JK) Mar 04, 08 Strength & Weibull statistics (JK) Mar 11, 08 Subcritical crack growth, SPT-Diagrams (JK) Mar 18, 08 Proof-testing, creep, thermical properties (JK) Apr 01, 08 polymer part (Prof. D. Schlüter) May 30, 08 term finish Ceramics: Introduction 4 Material Science I Documentation Visit our homepage @ http://ceramics.ethz.ch -> education -> courses -> Materialwissenschaft I und II Ceramics: Introduction 5 Material Science I Sources of Information - ETH Bib -NEBIS http://www.ethbib.ethz.ch/ http://www.nebis.ch/ Ceramics: Introduction 6 Material Science I Recommended Reading • Askeland & Phulé: Science and Engineering of Materials, 2003 • Barsoum MW: Fundamentals of Ceramics.